Prince Balthasar Carlos Diego Rodriguez De Silva y Velazquez (1599-1660)

The picture has something of this: child, people, dress, princess, portrait, baby, wear, doll, girl, retro, toy, son, sit, lid, vintage, royalty, antique.
Perhaps it’s a painting of a little girl in a dress holding a cane and standing next to a dog in a room with a red curtain and red drapes.